Manages a desktop containing MaximizeFrames or
JInternalFrame with a
MaximizeLayout. If the selected internal frame is
maximized, its toolbar buttons are displayed in an associated
JMenuBar, because the original buttons are hidden by
MaximizeLayout. To use this class simply instantiate an object with the
corresponding desktop and menuBar and use MaximizeFrame instead of
JInternalFrame. Use the dispose() method to stop
displaying the buttons.